Review Note
Last Update: 05/01/2023 12:01 PM
Current Deck: Ankore 2E::04 Obstetrical Imaging::16 Fetal spine
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Obstetrical Imaging: Fetal Spine
The last ossified vertebra in the second trimester is {{c1::S4}}, in the third trimester is {{c1::S5}}
The last ossified vertebra in the second trimester is {{c1::S4}}, in the third trimester is {{c1::S5}}
Extra Info
Used to determine spinal level



A, S4 is visualized at 21 weeks' gestation. B, S5 is visualized on a sagittal view at 24 weeks' gestation.
Mottet, Nicolas & Chaussy, Yann & Auber, Frederic & Guimiot, Fabien & Arbez-Gindre, Francine & Riethmuller, Didier & Crétolle, Célia & Benachi, Alexandra. (2018). How to Explore Fetal Sacral Agenesis Without Open Dysraphism: Key Prenatal Imaging and Clinical Implications: How to Explore Fetal Sacral Agenesis Without Open Dysraphism. Journal of Ultrasound in Medicine. 37. 10.1002/jum.14522.

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